CN116255109A - Cable packer for one-way rubber well washing mechanism of cable control water injection well - Google Patents
Cable packer for one-way rubber well washing mechanism of cable control water injection well Download PDFInfo
- Publication number
- CN116255109A CN116255109A CN202111462994.5A CN202111462994A CN116255109A CN 116255109 A CN116255109 A CN 116255109A CN 202111462994 A CN202111462994 A CN 202111462994A CN 116255109 A CN116255109 A CN 116255109A
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- China
- Prior art keywords
- cable
- main body
- well
- central tube
- water injection
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/023—Arrangements for connecting cables or wirelines to downhole devices
- E21B17/026—Arrangements for fixing cables or wirelines to the outside of downhole devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
- E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The invention relates to a cable packer for a one-way rubber well flushing mechanism for a cable-controlled water injection well. The method mainly solves the problems that the existing water injection technology cannot truly reflect the dynamic change of the oil reservoir and cannot provide effective data for oil reservoir analysis and injection and production scheme adjustment. The method is characterized in that: the inner wall of the upper end of the central pipe and the lower joint is connected with a liner pipe; the central pipe is connected with the upper part of the upper main body through a fixed pin thread, and a one-way rubber well flushing valve is embedded between the upper main body and the central pipe; a boss is arranged at the lower end of the central tube, and the boss of the central tube is connected with the upper main body through a deblocking pin; the lower joint and the outside of the central tube are provided with a lower main body, and the lower main body is limited by the lower joint; a single rubber cylinder is clamped between the upper main body and the lower main body and sleeved on the central tube; a setting piston is arranged between the lower main body and the central tube. The one-way rubber well flushing mechanism for the cable-controlled water injection well passes through the cable packer, can truly reflect the dynamic change of an oil reservoir, and provides effective data for oil reservoir analysis and injection and production scheme adjustment.
Description
Technical Field
The invention relates to the technical field of oil extraction in oil fields, in particular to a cable packer of a unidirectional rubber well washing mechanism for a cable control water injection well.
Background
In the later stage of the ultra-high water content period of the oil field, the separate injection well and the separate injection layer section are increased year by year, the contradiction among layers, planes and layers is increasingly activated, and the water injection qualification rate cannot be effectively ensured in the test period; the high-efficiency measurement and adjustment data are distributed in a punctiform manner, so that the dynamic change of the oil reservoir cannot be truly reflected, and effective data cannot be provided for oil reservoir analysis and injection and production scheme adjustment. Aiming at the problems, a preset cable intelligent layered water injection technology is provided.
Disclosure of Invention
The invention aims to solve the technical problems that the existing water injection technology in the background technology cannot truly reflect the dynamic change of an oil reservoir and cannot provide effective data for oil reservoir analysis and injection and production scheme adjustment, and provides the one-way rubber well-flushing mechanism cable packer for the cable-controlled water injection well, which passes the cable packer for the one-way rubber well-flushing mechanism and can truly reflect the dynamic change of the oil reservoir and provide effective data for oil reservoir analysis and injection and production scheme adjustment.
The invention solves the problems by the following technical proposal: the one-way rubber well flushing mechanism for the cable-controlled water injection well passes through the cable packer and comprises an upper joint and a lower joint, wherein the upper joint and the lower joint are connected with a central pipe through threads; the inner wall of the upper end of the central pipe and the lower joint is in threaded connection with the liner pipe; the central pipe is connected with the upper part of the upper main body through a fixed pin thread, and a one-way rubber well flushing valve is embedded between the upper main body at the upper part of the fixed pin and the central pipe; the lower end of the central tube is provided with a boss, and the upper main body is connected with the boss of the central tube through a deblocking pin; the lower joint and the outside of the central tube are provided with a lower main body, and the lower main body is limited by the lower joint; a single rubber cylinder is clamped between the upper main body and the lower main body and sleeved on the central tube; a setting piston is arranged between the lower main body and the central tube.
Preferably, inclined upper and lower steel pipe cable channels are arranged between the upper main body and the central pipe and at the upper end of the lower joint; the liner tube reserves a vertical steel tube cable channel, and the steel tube cable channel of the liner tube is communicated with an upper main body and a central tube at two sides and an upper steel tube cable channel and a lower steel tube cable channel which are inclined are arranged at the upper end of a lower joint;
preferably, the upper and lower steel pipe cable channel open ends are respectively connected with the press cap in a threaded manner, and are locked and sealed through the press cap.
Preferably, the bottom of the one-way rubber well flushing valve is provided with a groove.
Preferably, the lower end of the central tube is provided with a boss, the lower end of the boss is of a sawtooth thread structure, and the upper end of the setting piston is of an elastic sawtooth thread structure meshed with the sawtooth at the lower end of the central tube; a boss is arranged at the lower end of the central tube and meshed with the sawtooth threads of the setting piston to form a setting locking mechanism of the central tube.
Preferably, the unidirectional rubber well flushing valve is provided with a liquid inlet hole corresponding to the middle part of the upper main body, and the middle part of the lower main body corresponding to the setting piston is provided with a liquid outlet hole.
Preferably, the well flushing channel consists of a liquid inlet, a channel between the upper main body and the central pipe, a single rubber cylinder and a well flushing liquid outlet on the lower main body.
Preferably, O-shaped packing is respectively arranged between the upper joint, the lower joint and the central tube, between the central tube and the upper main body, between the setting piston and between the lower joint and the lower main body.
Preferably, an O-shaped packing is arranged in the well flushing channel between the upper main body between the fixing pin and the deblocking pin and the central tube.
Compared with the background technology, the invention has the following beneficial effects: the unidirectional rubber well-flushing mechanism for the cable-controlled water injection well passes through the cable packer,
1) Under the premise of not influencing the setting and well flushing functions of the packer, a cable channel is designed, so that a cable can pass through the packer, and the underground intelligent water distributor is communicated with ground equipment through the cable.
2) The one-way rubber well flushing valve is designed, and a well flushing piston and a well flushing valve structure on the original packer are canceled. When the packer washes the well, the well washing liquid compresses the one-way rubber well washing valve to form a well washing channel. When the packer works normally, the liquid in the central tube expands the one-way rubber well flushing valve to block the liquid outlet, so that the well liquid in the sleeve can be prevented from flowing from the upper end of the packer to the lower end of the packer through the well flushing channel; meanwhile, the bottom of the rubber well flushing valve is provided with a groove for preventing well fluid in the sleeve from flowing from the lower end of the packer to the upper end of the packer through the well flushing channel.
3) The novel rubber cylinder material and structure are designed, the original packer rubber cylinder, the middle rubber cylinder and the lower rubber cylinder are improved into a single rubber cylinder, the manufacturing cost of the rubber cylinder is reduced, and the whole length of the tool is shortened.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
In the figure: 1-upper joint; 2-a central tube; 3-liner tube; 4-pressing the cap; 5-an upper body; 6-a one-way rubber well flushing valve; 7-fixing pins; 8-O-shaped packing; 9-unsealing the pin; 10-single rubber cylinder; 11-a lower body; 12-setting a piston; 13-lower joint; 14-liquid inlet holes; 15-a liquid outlet hole; 16-serration threads.
The specific embodiment is as follows:
the invention will be further described with reference to the accompanying drawings in which:
as shown in figure 1, the one-way rubber well flushing mechanism for the cable-controlled water injection well passes through a cable packer and comprises an upper joint 1 and a lower joint 13, wherein the upper joint 1 and the lower joint 13 are in threaded connection with a central pipe 2; the inner wall of the upper end of the central pipe 2 and the lower joint 13 is in threaded connection with the liner pipe 3; the central tube 2 is connected with the upper part of the upper main body 5 through a fixed pin 7 in a threaded manner, and a one-way rubber well flushing valve 6 is embedded between the upper main body 5 at the upper part of the fixed pin 7 and the central tube 2; the bottom of the one-way rubber well flushing valve 6 is provided with a groove for preventing well fluid in the sleeve from flowing from the lower end of the packer to the upper end of the packer through a well flushing channel; the middle part of the unidirectional rubber well flushing valve 6 corresponding to the upper main body 5 is provided with a liquid inlet hole 14; the lower end central tube 2 of the fixed pin 7 is provided with a boss, and the upper main body 5 is connected with the boss of the central tube 2 through a deblocking pin 9; an O-shaped packing 8 is arranged in the well flushing channel between the upper main body 5 and the central tube 2 between the fixed pin 7 and the deblocking pin 9 and is used for sealing the well flushing channel; the lower joint 13 and the outside of the central tube 2 are provided with a lower main body 11, the upper end of the lower main body 11 is arranged at the top of the lower joint 13, the lower end of the lower main body 11 is seated on a step of the lower joint 13, and the lower main body 11 is limited by the lower joint 13; a single rubber cylinder 10 is clamped between the upper main body 5 and the lower main body 11, and the single rubber cylinder 10 is sleeved on the central tube 2; a setting piston 12 is arranged between the lower main body 11 and the central tube 2; the lower end of the central tube 2 is provided with a boss, the lower end of the boss is of a sawtooth thread structure, and the upper end of the setting piston 12 is of an elastic sawtooth thread structure meshed with the sawtooth thread 16 at the lower end of the central tube 2; the lower end of the central tube 2 is provided with a boss which is meshed with the elastic sawtooth thread 16 of the setting piston 12 to form a setting locking mechanism of the central tube 2, so that the rebound of a rubber cylinder can be prevented, and the setting state of the packer can be maintained after the setting is finished; the middle part of the lower main body 11 corresponding to the setting piston 12 is provided with a liquid outlet hole 15; inclined upper and lower steel pipe cable channels are arranged between the upper main body 5 and the central pipe 2 and at the upper end of the lower joint 13; the liner tube 3 is reserved with a vertical steel tube cable channel, the steel tube cable channel of the liner tube 3 is communicated with an upper main body 5 and a central tube 2 at two sides, and the upper end of a lower joint 13 is provided with an inclined upper steel tube cable channel and an inclined lower steel tube cable channel; the open ends of the upper and lower steel pipe cable channels are respectively connected with a press cap 4 in a threaded manner, and are locked and sealed through the press caps 4; placing O-shaped packing at other positions needing sealing; o-shaped packing 8 is respectively arranged between the upper joint 1, the lower joint 13 and the central tube 2, between the central tube 2 and the upper main body 5, between the setting piston 12 and between the lower joint 13 and the lower main body 11.
The well flushing channel consists of a liquid inlet 14, a channel between the upper main body 5 and the central tube 2, a single rubber cylinder 10 and a well flushing liquid outlet 15 on the lower main body 11.
The one-way rubber well washing mechanism for the cable-controlled water injection well is installed by passing through a cable packer, and the working process is as follows:
1. traversing the cable:
the steel pipe cable penetrates through a channel formed by the upper main body 5 and the central pipe 2, enters a cable channel reserved on the liner tube 3, and penetrates out from the lower joint 13; both ends are locked and sealed by the press cap 4.
2. Setting process:
the one-way rubber well washing mechanism for the cable-controlled water injection well is put into a sleeve through a cable packer; the oil pipe is pressurized, the water pressure pushes the setting piston 12 and the lower main body 11 to move upwards, and then the single rubber cylinder 10 is extruded, so that the single rubber cylinder 10 is expanded outwards to realize setting, and elastic sawtooth threads on the setting piston 12 are mutually meshed and locked with sawtooth threads of the central pipe 2, so that the single rubber cylinder 10 is prevented from rebounding.
3. The well flushing process comprises the following steps:
after the packer is set, the single rubber sleeve seals the sleeve space to isolate different water injection intervals. During normal water injection, injected water enters the bottom layer through a water nozzle on a water distributor arranged between two packers, and is separated by the packers, so that the corresponding relation between the water distributor and the water injection layer section is realized.
The well flushing refers to: unlike normal water injection, water is injected from the oil pipe to the casing, and then enters the stratum through the perforation on the casing, and the well flushing process is to inject the water from the casing through the packer until reaching the bottom of the pipe column, and then return from the oil pipe, so as to achieve the aim of cleaning the pipe column or other purposes. For a common packer, the sleeve is completely sealed by a rubber cylinder after the packer is set, so that the well flushing function cannot be completed.
The packer can realize the well flushing function through the following steps: after setting, the casing is pressurized from one side of the upper joint in the casing, and at the moment, the casing pressure pushes the one-way rubber well flushing valve 6 to open a well flushing channel, and water flows out from a well flushing liquid outlet hole in the lower main body 11 along the channel between the upper main body 5 and the central pipe 2 beyond the single rubber cylinder 10 to finish well flushing. The well-flushing channel means that water enters from the liquid inlet hole 14, passes through the single rubber cylinder 10 along the channel between the upper main body 5 and the central tube 2, and flows out from the well-flushing liquid outlet hole 15 on the lower main body 11 to finish well flushing.
4. And (3) deblocking process:
and (3) lifting the tubular column, wherein the lifting pulling force acts on the central tube 2, and the friction force between the single rubber cylinder 10 and the sleeve is larger than the shearing force of the deblocking pin 9, so that the deblocking pin 9 is sheared, the locking relationship between the upper main body 5 and the boss of the central tube 2 disappears, the boss of the central tube 2 and the setting piston 12 move downwards together under the rebound force of the single rubber cylinder 10, and the single rubber cylinder 10 releases the expansion state to finish the deblocking of the packer.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a cable control is one-way rubber well flushing mechanism crosses cable packer for water injection well, includes top connection (1), lower clutch (13), its characterized in that: the upper joint (1) and the lower joint (13) are connected with the central pipe (2) through threads; the inner wall of the upper end of the central pipe and the lower joint is connected with a liner pipe (3) through threads; the central pipe is connected with the upper part of the upper main body (5) through a fixed pin (7) in a threaded manner, and a one-way rubber well flushing valve (6) is embedded between the upper main body on the upper part of the fixed pin and the central pipe; a boss is arranged at the central tube (2) at the lower end of the fixed pin, and the boss of the central tube is connected with the upper main body (5) through a deblocking pin (9); the lower joint (13) and the outside of the central tube are provided with a lower main body (11), and the lower main body (11) is limited by the lower joint; a single rubber cylinder (10) is clamped between the upper main body and the lower main body, and the single rubber cylinder (10) is sleeved on the central tube; a setting piston (12) is arranged between the lower main body and the central tube.
2. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: an inclined upper steel pipe cable channel and an inclined lower steel pipe cable channel are arranged between the upper main body (5) and the central pipe (2) and at the upper end of the lower joint (13); the liner tube (3) is reserved with a vertical steel tube cable channel, and the steel tube cable channel of the liner tube is communicated with an upper steel tube cable channel and a lower steel tube cable channel which are inclined and are arranged between the upper main bodies on two sides and the central tube and at the upper end of the lower joint.
3. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 2, wherein: the opening ends of the upper steel tube cable channel and the lower steel tube cable channel are respectively connected with the press caps in a threaded manner, and are locked and sealed through the press caps.
4. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: the bottom of the one-way rubber well flushing valve (6) is provided with a groove.
5. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: the lower end of the central tube (2) is provided with a boss, the lower end of the boss is of a sawtooth thread structure, and the upper end of the setting piston (12) is of an elastic sawtooth thread structure meshed with the sawtooth at the lower end of the central tube (2); a boss is arranged at the lower end of the central tube and meshed with the sawtooth threads of the setting piston to form a setting locking mechanism of the central tube.
6. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: the middle part of the unidirectional rubber well washing valve (6) corresponding to the upper main body (5) is provided with a liquid inlet hole (14); the middle part of the lower main body (11) corresponding to the setting piston (12) is provided with a liquid outlet hole (15).
7. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: the well flushing channel consists of a liquid inlet (14), a channel between the upper main body and the central pipe, a single rubber cylinder (10) and a well flushing liquid outlet (15) on the lower main body (11).
8. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: o-shaped packing is respectively arranged between the upper joint, the lower joint and the central tube, between the central tube and the upper main body, between the setting piston and between the lower joint and the lower main body.
9. The one-way rubber well-flushing mechanism cable-crossing packer for a cable-controlled water injection well of claim 1, wherein: an O-shaped packing is arranged in a well flushing channel between the upper main body and the central tube between the fixing pin (7) and the deblocking pin (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462994.5A CN116255109A (en) | 2021-12-02 | 2021-12-02 | Cable packer for one-way rubber well washing mechanism of cable control water injection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111462994.5A CN116255109A (en) | 2021-12-02 | 2021-12-02 | Cable packer for one-way rubber well washing mechanism of cable control water injection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116255109A true CN116255109A (en) | 2023-06-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111462994.5A Pending CN116255109A (en) | 2021-12-02 | 2021-12-02 | Cable packer for one-way rubber well washing mechanism of cable control water injection well |
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| CN (1) | CN116255109A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117703325A (en) * | 2024-02-06 | 2024-03-15 | 西安思坦仪器股份有限公司 | Oil field wave code separate injection water injection ground control system |
-
2021
- 2021-12-02 CN CN202111462994.5A patent/CN116255109A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117703325A (en) * | 2024-02-06 | 2024-03-15 | 西安思坦仪器股份有限公司 | Oil field wave code separate injection water injection ground control system |
| CN117703325B (en) * | 2024-02-06 | 2024-05-07 | 西安思坦仪器股份有限公司 | Oil field wave code separate injection water injection ground control system |
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